Discourse up to 3.2.0 /uploads resource consumption

Summaryinfo

A vulnerability categorized as problematic has been discovered in Discourse up to 3.2.0. The impacted element is an unknown function of the file /uploads. Executing a manipulation can lead to resource consumption. This vulnerability appears as CVE-2024-24827. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Discourse up to 3.2.0. This vulnerability affects an unknown functionality of the file /uploads. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

Discourse is an open source platform for community discussion. Without a rate limit on the POST /uploads endpoint, it makes it easier for an attacker to carry out a DoS attack on the server since creating an upload can be a resource intensive process. Do note that the impact varies from site to site as various site settings like `max_image_size_kb`, `max_attachment_size_kb` and `max_image_megapixels` will determine the amount of resources used when creating an upload. The issue is patched in the latest stable, beta and tests-passed version of Discourse. Users are advised to upgrade. Users unable to upgrade should reduce `max_image_size_kb`, `max_attachment_size_kb` and `max_image_megapixels` as smaller uploads require less resources to process. Alternatively, `client_max_body_size` can be reduced in Nginx to prevent large uploads from reaching the server.

The advisory is available at github.com. This vulnerability was named CVE-2024-24827 since 01/31/2024. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 3.3.0.beta1 eliminates this vulnerability.

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Productinfo

Type

• Chat Software

Name

• Discourse

Version

• 3.0
• 3.1
• 3.2.0

License

• open-source

Website

• Product: https://github.com/discourse/discourse/

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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